Due to the sustainable use of wastes, cathode materials of spent lithium-ion batteries are recovered and used as transition metal precursors to prepare metal oxides catalysts for the oxidation of VOCs. In this work, a series of manganese-based and cobalt-based metal oxides are synthesized via different preparation methods. Catalytic activities of the catalysts prepared are investigated through complete oxidation of oxygenated VOCs and the physicochemical properties of optimum samples are characterized. Evaluation results indicate that MnOx (SY) (HT) sample prepared via hydrothermal method and CoOx (GS) (CP) synthesized via co-precipitation method had better performance, because they have higher specific surface area, higher concentration of active oxygen species and high-valence metal ion, as well as better low-temperature reducibility compared to the other multi-metal oxides used in the study. In addition, TD/GC-MS results imply that further oxidation of by-products requires high reaction temperature during VOCs oxidation.

由于废物的可持续利用，废锂离子电池的正极材料得以回收，并用作过渡金属前体，以制备用于VOC氧化的金属氧化物催化剂。在这项工作中，通过不同的制备方法合成了一系列锰基和钴基金属氧化物。通过对氧化的VOCs进行完全氧化来研究制备的催化剂的催化活性，并表征最佳样品的理化性质。评价结果表明，水热法制备的MnOx（SY）（HT）样品和共沉淀法合成的CoOx（GS）（CP）具有较高的比表面积，较高的活性氧浓度和较高的比性能。价金属离子 与本研究中使用的其他多金属氧化物相比，具有更好的低温还原性。此外，TD / GC-MS结果表明，副产物的进一步氧化需要在VOC氧化过程中提高反应温度。